Shade holder for incandescent electric lamps



Oct. 7, 1924.

I SIMENOWSKY SHADE HOLDER FOR INCANDESCENT ELECTRIC LAMP S Filed Aug.14, 19 22 L 01.41.15 Sa'meno ws/cy,

WIT/V555,; y v I ATTORNEYS.

Fatented Got. 7, 192%,

pairs sraras rares Louis SIMENOWSKY, or MILWAUKEE, WISCONSIN.

SHADE noLnnn non rncannnscnivr nLEornrcynAMrs.

, Application filed August 14, 1922. Serial No. 581,555.

of Milwaukee and State of Wisconsin, haveinvented a new and usefulImprovement in Shade Holders for Incandescent Electric Lamps; and I dodeclare the following to be a clear, exact, and complete description 1thereof, such as will enable others skilled in the art to which theinvention relates to make and use the same, reference being had to theaccompanying drawings for an X- position of a construction in which myinvention has been embodied.

The invention relates particularly to the harp which is employed tosupport the shade of an incandescent electric lamp.

The invention involves an improvement in the construction of the harp,whereby a strong and durable structure may be more economicallymanufactured.

Constructions of this class comprise two arms which rise from a base atopposite sides of the lamp and are brought together at their upper endsin such a manner as to form a support for the shade. The base'is formedas a collar which rests upon and is secured to the lighting fixture inposition to support the upstanding'arms in a practically rigid position,the said arms being joined at their upper ends by means of a similarcollar, the opening of which is threaded for the reception of the screwdesigned to retain the shade ofthe lamp in position.

My invention relates to the manner of attaching the arms to the twocollars to complete the harp construction, and comprises a pressedsheet-metal shell adapted to encircle the curved upper and lower ends ofthe two arms of the harp, so that the latter are firmly held in positionto permit threading of the circular opening formed by the said curvedends.

The invention will now be described in detail and the novel featuresthereof will be pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a view in elevation showing.my invention in position as part of a lighting fixture, and showing theshade thereon, the shade being shown in section.

Fig.- 2 is a view of the harp looking from the bottom thereof, andshowing the main ner in which the lower ends or feet of the arms arebrought together and secured in position by the embracing ring to formthe base. i

Fig. 3 is a like view without the embrac ing ring, and showing theformation of the lower ends: or feet of the arms.

Fig. i is a view of the harp looking from the top thereof and showingthe manner in which the upper extremities of the arms are broughttogether and secured-in position to form the collar or nipple whichreceives the shade holding screw.

Fig. 5 is a perspective view of a cup drawn from a disc of sheet metal,and shaped to receive the curved feet of the arms as shown in Figs. 2and 3.

Fig. 6 is a vertical section through the. base, and showing a portion ofone of the arms extending upwardly therefrom.

Fig. 7 is a sectional view of a modification, similar to Fig. 6, andshowing the lower ends of the arms as connected by tWo embracing rings,fone encircling the other! In the drawing, the numeral 10 indicateselectric lighting fixture ,ofordinary form and provided with an interiorconduit 11 through which the current wires are led.

The upper end of the conduit supports the base 12 of the harp, the saidbase-beingconnected to the conduit in any desired man ner so as toproduce a rigid support for {t harp and the shade thereon. For instance,the said base may be screwed upon the threaded upper end of the conduit,or held thereon by. a clamping nut 12", or the threaded end of the lampsocket 13 may be screwed on to the end of the conduit and the nut beomitted.

The harp is formed of two arms 14: and 15 bowed outwardly to form aclearance for the lamp bulb 16, when the plug of the latter is insertedin the socket 13. The lower ends or feet of the arms 14 and 15 arecurved oppositely as indicated at 17 and 18 respectively, so as to forma circular opening when the feet are assembled in the position indicatedin Figs. 2 and 3. The curved feet 17 and 18 in the annular arrangementshown are embraced by a cup l9 pressed from sheet metal and having intheopposite side walls thereof notches 20 and 21, wh ch embrace portionsof thefeet at the points where the curves com so-f the stand or pedestalof an incandescent mence. so as to closely embrace the annularformation. After the elements are seated in the cup as described, theupper-edge of the wall of the cup is spun over the curved feet towardthe center of the cup so as to unite the parts in a substantial manner.The sheet metal used in the formation of the cup will be of a gaugesufiicient to enable it to withstand outward pressure in case it bedesired to tap a thread in the circular opening formed by the meeting ofthe curved feet. An opening 2-2 in the bottom of the cup, correspondingin diameter to that of the ring may be formed either before or after theassembly. When the structure is completed as described the feet areencased in a ring 23, which tightly embraces the outer surface of thecurved feet of the arms and secures the parts in fixed position.

The formation of the ring 24 at the upper end of the upstanding arms issin'iilar in all particulars to that which has been described inconnection with the production of the base, and consequently need not bestated in detail. Fig. 4 may be referred to as showing the upperconstruction, which differs from the base only in the diameter of theopening. interiorly for the reception of a screw 25, which holds theshade 26 in position upon the harp.

A perforated circular plate 27 for sup porting the shade 26 is placedover the ring 24: and a centrally perforated cap 28 rests upon theshade, the screw 25 acting tc bind the parts as shown in Fig. l, andretaining the shade in position. Y

Ordinarily a single stamped metal cup when spun around the curvedformation at the ends of the harp will be suliicient to hold.

the parts against movement in the threadmg operations and in use.Reinforcement can be secured by using a second cup of The opening isthreaded slightly enlarged diameter. and placing it upon the reverseside, as shown in Fig. 7. This reinforcement will not however he usuallynecessary, inasmuch as a single encircling ring has been foundsuficient.

1 invention may likewise be used for supporting light transmitting bowlsin indirect ligliiting systems, by simply re ersing the arrangement ofthe harp.

Having thus described my invention, what I claim and desire to secure byLet ters liatent of the United States, is:

l. A harp for supporting a lamp shade, comprising two uistanding arms,curved at both ends and meeting to form C-llj'CUlfll openings at the topand bottom of the harp, the end portions of the harp about the openingsat the top and bottom being encircled by shells of sheet metal to holdthe parts in position, the circular openings formed by the curvedmeeting ends being interiorly threaded to receive screws for supportingthe harp and for supporting the shade thereon. respectively.

A harp for supporting" a lamp shade, comprising two bowed arms curved attheir ends to form circular openings at the top and bottom of the harp,sheet metal shells embracing the ends about the said openings to holdthe parts in position,the said circular openings formed. by the curvedmeeting ends of the bars being provided with screw threads cutinteriorly thereof for the reception of screw threaded parts to supportthe harp in position and the shade upon the harp.

In testimony whereof, I have signed my name at lfi lilwaulte this 12thday of August, 1922.

L. SIMENOWVSKY. VVi tnesses 'W. F. \Voonann, JOHN C. KLnIsT.

